Every year, at least one movie comes out of Austin's South by Southwest film festival on its way to megahit status. Which of this year's fantastical science fiction and fantasy films at SXSW will hit the big time this year?

We'll be there, previewing and reviewing all the films at 2011's SXSW. Here are the flicks we're most excited about.

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Detention
Joseph Kahn's is already well known for his Lady Gaga and Britney Spears music videos. But his demented movie about a time-traveling high school serial killer (that somehow involves aliens) is definitely going to leave its mark on society. The more we find out about this film (which stars Dane Cook and Josh Hutcherson) the less we understand, and that's a good thing!

Source Code
You loved Duncan Jones' Moon, but will you love his action thriller Source Code, starring Jake Gyllenhaal? Gyllenhaal plays a soldier who is sent on a special cerebral mission into the mind of a dead victim of a terrorist attack. Charged with finding the terrorist, Gyllenhaal must relive the last eight minutes of the victim's, life until he can figure out where the attack came from.

Insidious
We're expecting jump-out-of-your-seat scares from this movie about a family whose son is haunted by those who have passed on.

Super
Last year the superhero flick Kick-Ass won the crowd over, with a crazy Adam West-channeling Nic Cage. But can splatter movie-maker James Gunn and The Office star Rainn Wilson top that superhero hype, with their ultra violent real life costumed avenger flick Super? Wilson stars as a down-and-out nobody who becomes the Crimson Bolt and beats crime with a wrench. His motto: "Shut up, crime!"

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The Innkeepers
Sadly there is no trailer for Ti West's (The House of the Devil) movie. But the buzz has been calling this movie a return to the ghost stories of yesterday. Here's the synopsis: "A horror-thriller centered on the last two employees at a haunted hotel that's going out of business."

Attack The BlockAliens attack the mean streets of London, and it's up to the feisty kids from the neighborhood to protect their block. The also stars Nick Frost and was directed and written by Joe Cornish (Edgar Wright's frequent writing partner and screenwriter for Marvel's Ant-Man movie).

The Divide
Eight survivors live in a fallout shelter after the end of the world. Who will survive the post-apocalypse lifestyle of trapped in a small space with total strangers?

George the Hedgehog
Part of the SXFantastic Fest of midnight movies — we'll let the synopsis speak for this little critter, "Jez Jerzy is a skateboarding hedgehog who likes to drink beer and fondle breasts. He finds it hard to pursue his passions, however, while being tormented by neo-Nazi skinheads, mad scientists and a drooling, flatulent clone of himself."

Little Deaths
A group of swingers mix death with pleasure, and possibly some sort of creepy homeless street urchin monster. Also part of the SXFantastic Fest

Paul
Simon Pegg and Nick Frost discover a fugitive alien on the run from the law, while on a road trip across the U.S.A.

Red Riding Hood
One girl, two boys, a werewolf, and Gary Oldman in wizard drag. This film from the director of the original Twilight could be the year's sexiest supernatural adventure.